<template>
    <div>
        <!-- 面包屑导航区 -->
       <el-breadcrumb separator-class="el-icon-arrow-right">
            <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
            <el-breadcrumb-item>用户管理</el-breadcrumb-item>
            <el-breadcrumb-item>用户列表</el-breadcrumb-item>
        </el-breadcrumb>
        <!-- 卡片视图区 -->
        <el-card class="box-card">
            <el-row :gutter='20'>
                <el-col :span="9">
                    <el-input placeholder="请输入内容" class="input-with-select" v-model="queryInfo.query" clearable @clear="getUserList()">
                        <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
                    </el-input>
                </el-col>
                <el-col :span="4">
                    <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
                </el-col>
            </el-row>
            <!-- 用户列表区 -->
            <el-table :data="userlist"
                style="width: 100%"
                border
                stripe>
                <el-table-column type='index' label="#"></el-table-column>
                <el-table-column prop="username" label="姓名" width="180"></el-table-column>
                <el-table-column prop="email" label="邮箱" width="180"></el-table-column>
                <el-table-column prop="mobile" label="电话"></el-table-column>
                <el-table-column prop="role_name" label="角色"></el-table-column>
                <el-table-column label="状态">
                    <!-- 作用域插槽 -->
                    <template slot-scope="scope">
                        <!-- 当前行的所有数据 -->
                        <!-- {{scope.row}} -->
                        <el-switch
                        v-model="scope.row.mg_state" @change="userStateChenged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" width="180">
                    <template slot-scope="scope">
                        <!-- {{scope.row.a}} -->
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 按钮提示框 -->
                         <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
                            <!-- 分配角色按钮 -->
                             <el-button type="warning" icon="el-icon-setting" size="mini" @click="(setRole(scope.row))"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>
            <!-- 分页区域 -->
            <el-pagination
                    @size-change="handleSizeChange"
                    @current-change="handleCurrentChange"
                    :current-page="queryInfo.pagenum"
                    :page-sizes="[1, 2, 5, 10]"
                    :page-size="queryInfo.size"
                    layout="total, sizes, prev, pager, next, jumper"
                    :total="total">
            </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
        <el-dialog
            title="添加用户"
            :visible.sync="addDialogVisible"
            width="50%"
            @close="addDialogClosed"
            >
            <!-- 内容主体区 -->
            <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
                <el-form-item label="用户名" prop="username">
                    <el-input v-model="addForm.username"></el-input>
                </el-form-item>
                <el-form-item label="密码" prop="password">
                    <el-input v-model="addForm.password"></el-input>
                </el-form-item>
                <el-form-item label="邮箱" prop="email">
                    <el-input v-model="addForm.email"></el-input>
                </el-form-item>
                <el-form-item label="手机号" prop="mobile">
                    <el-input v-model="addForm.mobile"></el-input>
                </el-form-item>
                
            </el-form>
            <!-- 底部区 -->
            <span slot="footer" class="dialog-footer">
                <el-button @click="addDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="addUser">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 修改用户的对话框 -->
        <el-dialog
            title="修改用户"
            :visible.sync="editDialogVisible"
            width="50%"
            @close="editDialogClosed">
            <span>
                <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="70px">
                    <el-form-item label="用户名">
                        <el-input v-model="editForm.username" disabled></el-input>
                    </el-form-item>
                    <el-form-item label="邮箱" prop="email">
                        <el-input v-model="editForm.email"></el-input>
                    </el-form-item>
                    <el-form-item label="手机号" prop="mobile">
                        <el-input v-model="editForm.mobile"></el-input>
                    </el-form-item>
                </el-form>
            </span>
            <span slot="footer" class="dialog-footer">
                <el-button @click="editDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="editUserInfo">确 定</el-button>
            </span>
        </el-dialog>
        <!-- 分配角色的对话框 -->
        <el-dialog
            title="分配角色"
            :visible.sync="setRoleDialogVisible"
            width="50%"
            @close="setRoleDialogClosed">
            <div>
                <p>当前的用户：{{userInfo.username}}</p>
                <p>当前的角色：{{userInfo.role_name}}</p>
                <p>分配新角色
                    <el-select v-model="selectedRoleId" placeholder="请选择">
                        <el-option
                        v-for="item in rolesList"
                        :key="item.id"
                        :label="item.roleName"
                        :value="item.id">
                        </el-option>
                    </el-select>
                </p>
            </div>
            <span slot="footer" class="dialog-footer">
                <el-button @click="setRoleDialogVisible = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
            </span>
        </el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        // 验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
            if (regEmail.test(value)) return cb()
            cb(new Error('请输入合法的邮箱'))
        }

        var checkMobile = (rule, value, cb) => {
            const regTel = /^1(3|4|5|6|7|8|9)\d{9}$/
            if (regTel.test(value)) return cb()
            cb(new Error('请输入正确的手机号'))
        }

        return {

            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                pagenum: 1,
                pagesize: 2
            },
            userlist: [],
            total: 0,
            // 控制对话框的显示与隐藏
            addDialogVisible: false,
            // 添加用户数据
            addForm: {
                username: '',
                passsword: '',
                email: '',
                mobile: ''
            },
            // 添加表单的验证规则
            addFormRules: {
                username: [
                    { required: true, message: '请输入用户名', trigger: 'blur' },
                    { min: 3, max: 10, message: '用户名的长度为3到10个字符', trigger: 'blur' }
                ],
                password: [
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 16, message: '密码的长度为6到16个字符', trigger: 'blur' }
                ],
                email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户信息对象
            editForm: {},
            // 修改用户的输入规则
            editFormRules: {
                 email: [
                    { required: true, message: '请输入邮箱', trigger: 'blur' },
                    { validator: checkEmail, trigger: 'blur' }
                ],
                mobile: [
                    { required: true, message: '请输入手机号', trigger: 'blur' },
                    { validator: checkMobile, trigger: 'blur' }
                ]
            },
            // 控制分配角色的对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo: '',
            // 所有角色数据的列表
            rolesList: [],
            // 已选中的角色id
            selectedRoleId: ''
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
            const { data: res } = await this.$http.get('/users', { params: this.queryInfo })
            console.log(res);
            if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
            this.userlist = res.data.users
            this.total = res.data.total
        },
        handleSizeChange(newSize) {
            // console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        handleCurrentChange(newPage) {
            // console.log(newPage);
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        // 监听switch
        async userStateChenged(userInfo) {
            // console.log(userInfo);
            const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.ms_state}`)
            // console.log(res);
            if (res.meta.status !== 200) {
                userInfo.ms_state = !userInfo.ms_state
                return this.$message.error('更新用户状态失败')
            }
            this.$message.success('更新数据成功')
        },
        // 监听对话框的关闭事件
        addDialogClosed() {
            this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户
        addUser() {
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                // 可以发起用户的请求
                const { data: res } = await this.$http.post('users', this.addForm)
                if (res.meta.status !== 201) {
                    this.$message.error('添加用户失败！')
                }
                this.$message.success('添加用户成功！')
                // 隐藏添加用户的对话框
                this.addDialogVisible = false
                // 重新获取用户列表数据
                this.getUserList()
            })
        },
        // 展示编辑用户的对话框
        async showEditDialog(id) {
            // 点击修改按钮显示对话框
            this.editDialogVisible = true
            // console.log(id);
            const { data: res } = await this.$http.get(`users/${id}`)
            if (res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败')
            }
            this.editForm = res.data
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                // console.log(valid);
                if (!valid) return
                // 发起修改用户信息的数据请求
                const { data: res } = await this.$http.put(`users/${this.editForm.id}`, { 
                    email: this.editForm.email,
                    mobile: this.editForm.mobile 
                })
                // console.log(res);
                if (res.meta.status !== 200) {
                    return this.$message.error('更新用户数据失败')
                }
                // 关闭对话框
                this.editDialogVisible = false
                // 刷新数据列表
                this.getUserList()
                // 提示用户更新数据成功
                this.$message.success('更新用户数据成功')
            })
        },
        // 给根据id删除用户
        async removeUserById(id) {
            // console.log(id);
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
                confirmButtonText: '确定',
                cancelButtonText: '取消',
                type: 'warning'
            }).catch(err => err)
            // 点击确定返回一个confirm
            // 点击取消会报错，使用catch捕获错误，并抛出。结果返回cancel
            // console.log(confirmResult);
            if (confirmResult !== 'confirm') {
                return this.$message.info('已经取消了删除')
            }
            const { data: res } = await this.$http.delete(`users/${id}`)
            if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
            this.$message.success('删除用户成功！')
            // 重新加载页面
            this.getUserList()
        },
        // 展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo
            // 在展示对话框之前获取所有的角色列表
            const { data: res } = await this.$http.get('roles')
            if (res.meta.status !== 200) return this.$message.error('获取角色列表失败')
            this.rolesList = res.data
            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo() {
            if (!this.selectedRoleId) {
                return this.$message.error('请选择分配的角色')
            }
            const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
            if (res.meta.status !== 200) return this.$message.error('更新角色失败')
            this.$message.success('更新角色成功')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        setRoleDialogClosed() {
            this.selectedRoleId = ''
            this.userInfo = ''
        }
    }
}
</script>

<style lang="less" scoped>
    
</style>
